<template>
    <div>
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>添加商品</el-breadcrumb-item>
      </el-breadcrumb>
      <el-card>
        <el-alert title="警告提示的文案" type="info" center show-icon :closable="false"></el-alert>
        <!--步骤条-->
        <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
          <el-step title="基本信息"></el-step>
          <el-step title="商品参数"></el-step>
          <el-step title="商品属性"></el-step>
          <el-step title="商品图片"></el-step>
          <el-step title="商品内容"></el-step>
          <el-step title="完成"></el-step>
        </el-steps>
        <!--tab兰-->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
          <el-tabs v-model="activeIndex" tab-position="left" :before-leave="beforeTabLeave"  @tab-click="tabClicked">
            <el-tab-pane label="基本信息"  name="0">
              <el-form-item label="商品名称" prop="goods_name">
                <el-input v-model="addForm.goods_name"></el-input>
              </el-form-item>
              <el-form-item label="商品价格" prop="goods_price">
                <el-input v-model="addForm.goods_price" type="number"></el-input>
              </el-form-item>
              <el-form-item label="重量" prop="goods_weight">
                <el-input v-model="addForm.goods_weight"></el-input>
              </el-form-item>
              <el-form-item label="数量" prop="goods_number">
                <el-input v-model="addForm.goods_number"></el-input>
              </el-form-item>
              <el-form-item label="商品分类" prop="goods_cat">
                <el-cascader :options="cateList" :props="cateProps"  @change=" handleChange" v-model="addForm.goods_cat" clearable ></el-cascader>
              </el-form-item>
            </el-tab-pane>
            <el-tab-pane label="商品参数"  name="1">
              <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                <el-checkbox-group v-model="item.attr_vals" >
                  <el-checkbox :label="cb" v-for="(cb, i) in item.attr_vals" :key="i" border></el-checkbox>
                </el-checkbox-group>
              </el-form-item>
            </el-tab-pane>
            <el-tab-pane label="商品属性"  name="2">
              <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
                <el-input v-model="item.attr_vals"></el-input>
              </el-form-item>
            </el-tab-pane>
            <el-tab-pane label="商品图片"  name="3">
              <el-upload :action="uploadUrl" :headers="headersObj"
                :on-preview="handlePreview"
                :on-remove="handleRemove"
                list-type="picture" :on-success="handleSuccess">
                <el-button size="small" type="primary">点击上传</el-button>
              </el-upload>
            </el-tab-pane>
            <el-tab-pane label="商品内容"  name="4">
              <!--富文本编辑器-->
              <quill-editor v-model="addForm.goods_introduce" ></quill-editor>
              <el-button type="primary" class="tabAdd" @click="addGoods">添加商品</el-button>
            </el-tab-pane>
          </el-tabs>
        </el-form>

      </el-card>

      <!--图片预览-->
      <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
        <el-image :src="previewPath" ></el-image>
      </el-dialog>
    </div>
</template>

<script>
  import _ from 'lodash'
    export default {
        data() {
            return {
              activeIndex: '0',
              addForm: {
                goods_name: '',
                goods_price: '',
                goods_weight: '',
                goods_number: '',
                goods_cat: [], // 商品分组
                // 图片数组
                pics: [],
                // 商品详情描述
                goods_introduce: '',
                attrs: []
              },
              addFormRules: {
                goods_name: [
                  { required: true, message: '请输入商品名称', trigger: 'blur' }
                ],
                goods_price: [
                  { required: true, message: '请输入商品价格', trigger: 'blur' }
                ],
                goods_weight: [
                  { required: true, message: '请输入商品重量', trigger: 'blur' }
                ],
                goods_number: [
                  { required: true, message: '请输入商品数量', trigger: 'blur' }
                ]

              },
              cateList: [],
              cateProps: {
                value: 'cat_id',
                label: 'cat_name',
                children: 'children'
              },
              manyTableData: [],
              onlyTableData: [],
              // 图片上传地址
              uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
              headersObj: {
                Authorization: window.sessionStorage.getItem('token')
              },
              previewPath: '',
              previewVisible: false
            }
        },
        created() {
          this.getCateList();
        },
        methods: {
          async getCateList() {
            const {data: res} = await this.$http.get('categories');
            if (res.meta.status !== 200) return this.$message.error('获取商品信息失败');
            this.cateList = res.data;
          },
          // 选中父级分类触发函数
          handleChange() {
            // 如果选择的不是三级清空数组
            if (this.addForm.goods_cat.length !== 3) {
              this.addForm.goods_cat = []
            }
          },
          beforeTabLeave(activeName, oldActiveName) {
            if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
              this.$message.error('请选择商品分类');
              return false
            }
          },
          async tabClicked() {
            if (this.activeIndex === '1') {
              const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {
                params: { sel: 'many' }
              });
              if (res.meta.status !== 200) return this.$message.error({message: '获取动态参数失败！'});
              this.manyTableData = res.data;
              // 将attr_vals转为数组
              res.data.forEach(item => {
                item.attr_vals = item.attr_vals.split(',')
              });
            } else if (this.activeIndex === '2') {
              const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {
                params: { sel: 'only' }
              });
              if (res.meta.status !== 200) return this.$message.error({message: '获取动态参数失败！'});
              this.onlyTableData = res.data;
              console.log(res.data)
            }
          },
          // 处理图片预览效果
          handlePreview(file) {
            this.previewPath = file.response.data.url
            this.previewVisible = true
            console.log(this.previewPath);
          },
          // 处理移除图片
          handleRemove(file) {
            // 拿到临时路径
            const filePath = file.response.data.tmp_path
            // 拿到临时路径索引
            const i = this.addForm.pics.findIndex(x => {
              x.pic = filePath
            })
            // 移除
            this.addForm.pics.splice(i, 1)
            console.log(this.addForm);
          },
          // 监听上传成功事件
          handleSuccess(response) {
            // 保存临时路径
            const picInfo = {pic: response.data.tmp_path}
            this.addForm.pics.push(picInfo)
            console.log(this.addForm);
          },
          // 添加商品信息
          addGoods() {
            this.$refs.addFormRef.validate(async valid => {
              // 判断校验是否通过
              if (!valid) {
                this.$message.error({message: '请选择必填表单项！'});
              }
              // cloneDeep深度拷贝
              const from = _.cloneDeep(this.addForm);
              from.goods_cat = from.goods_cat.join(',');
              // 处理动态参数
              this.manyTableData.forEach(item => {
                const newInfo = {
                  attr_id: item.attr_id,
                  attr_value: item.attr_vals.join(',')
                };
                this.addForm.attrs.push(newInfo)
              });
              // 处理静态属性
              this.onlyTableData.forEach(item => {
                const newInfo = {
                  attr_id: item.attr_id,
                  attr_value: item.attr_vals
                };
                this.addForm.attrs.push(newInfo)
              });
              from.attrs = this.addForm.attrs;
              const {data: res} = await this.$http.post('goods', from);
              if (res.meta.status !== 201) return this.$message.error({message: '添加商品失败！'});
              this.$message.success({message: '添加商品成功！'});
              this.$router.push('/goods')
            })
          }
        },
      computed: {
        // 选择的三级ID
        cateId() {
          if (this.addForm.goods_cat.length === 3) {
            return this.addForm.goods_cat[2]
          }
          return null
        }
      }
    }
</script>

<style lang="less" scoped>
  .el-steps {
    margin: 15px 0;
  }
  .el-checkbox {
    margin: 0 5px 0 0 !important;
  }
  .el-image {
    width: 100%;
  }
  .tabAdd{
    margin-top: 15px;
  }

</style>
